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Iron Mountain
IRM

Overview Fund Activity

982 hedge funds and large institutions have $20.7B invested in Iron Mountain in 2025 Q1 according to their latest regulatory filings, with 89 funds opening new positions, 342 increasing their positions, 396 reducing their positions, and 142 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
982
Holders Change
-70
Holders Change %
-6.65%
% of All Funds
13.34%
Holding in Top 10
10
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-9.09%
% of All Funds
0.14%
New
89
Increased
342
Reduced
396
Closed
142
Calls
$151M
Puts
$197M
Net Calls
-$46.5M
Net Calls Change
-$48.9M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$397M
2
BlackRock
BlackRock
New York
+$271M
3
CAM
Contour Asset Management
New York
+$123M
4
Goldman Sachs
Goldman Sachs
New York
+$78.6M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$75.3M

Top Sellers

1
AM
AGF Management
Ontario, Canada
-$224M
2
TD Asset Management
TD Asset Management
Ontario, Canada
-$151M
3
Capital World Investors
Capital World Investors
California
-$146M
4
Cohen & Steers
Cohen & Steers
New York
-$123M
5
Wellington Management Group
Wellington Management Group
Massachusetts
-$41.3M
Name Holding Trade Value Shares
Change 		Shares
Change %
Aviva
76
Aviva
United Kingdom
$30.5M -$6.48M -75,287 -18%
Korea Investment Corp
77
Korea Investment Corp
South Korea
$28.8M +$11.7M +136,228 +69%
MHIC
78
Marble Harbor Investment Counsel
Massachusetts
$28.7M -$1.12M -12,982 -4%
William Blair & Company
79
William Blair & Company
Illinois
$28.4M -$343K -3,984 -1%
WCP
80
Waterfront Capital Partners
New York
$28M +$7.51M +87,273 +37%
AHC
81
Adell Harriman & Carpenter
Texas
$27.7M -$688K -7,995 -2%
Adage Capital Partners
82
Adage Capital Partners
Massachusetts
$27.4M +$17.5M +203,900 +179%
Aberdeen Group
83
Aberdeen Group
United Kingdom
$26.4M -$27.5M -321,390 -51%
Swedbank
84
Swedbank
Sweden
$26.1M +$1.21M +14,092 +5%
JF
85
Jump Financial
Illinois
$25.9M +$22.8M +264,727 +726%
State Board of Administration of Florida Retirement System
86
State Board of Administration of Florida Retirement System
Florida
$24.9M +$49.9K +580 +0.2%
Macquarie Group
87
Macquarie Group
Australia
$24.4M +$2.09M +24,284 +9%
AAF
88
Andra AP-fonden
Sweden
$23.6M +$3.51M +40,800 +17%
BNP Paribas Asset Management
89
BNP Paribas Asset Management
France
$22.8M -$2.53M -29,348 -10%
WorldQuant Millennium Advisors
90
WorldQuant Millennium Advisors
New York
$22.5M +$22.5M +260,981 New
Pacer Advisors
91
Pacer Advisors
Pennsylvania
$21M +$2.83M +32,942 +16%
RFC
92
Regions Financial Corp
Alabama
$20.8M +$903K +10,500 +5%
National Bank of Canada
93
National Bank of Canada
Quebec, Canada
$20.6M +$7.58M +88,058 +58%
Retirement Systems of Alabama
94
Retirement Systems of Alabama
Alabama
$20M -$101K -1,174 -0.5%
Citigroup
95
Citigroup
New York
$19.8M +$5.14M +59,761 +35%
New York State Teachers Retirement System (NYSTRS)
96
New York State Teachers Retirement System (NYSTRS)
New York
$19.6M -$2.14M -24,892 -10%
Ensign Peak Advisors
97
Ensign Peak Advisors
Utah
$19.5M -$446K -5,184 -2%
Corient Private Wealth
98
Corient Private Wealth
Florida
$19.3M +$657K +7,630 +4%
Man Group
99
Man Group
United Kingdom
$18.5M -$513K -5,962 -3%
Envestnet Asset Management
100
Envestnet Asset Management
Illinois
$18.4M -$2.72M -31,564 -13%
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